Finding the Third Proportional to 109,269,853,388 and 243,664,387,207

Step by Step Solution

1. Step 1: Write the proportion equation
   109,269,853,388 : 243,664,387,207 = 243,664,387,207 : x
2. Step 2: Convert to fraction form
   109,269,853,388/243,664,387,207 = 243,664,387,207/x
3. Step 3: Cross multiply
   109,269,853,388x = 243,664,387,207 × 243,664,387,207
4. Step 4: Simplify right side
   109,269,853,388x = 59,372,333,592,962,825,977,856
5. Step 5: Solve for x
   x = 59,372,333,592,962,825,977,856/109,269,853,388
6. Step 6: Final answer
   x = 543,355,113,529.26